Stanic or Stannic: How To spell?
The word Stanic is misspelled against Stannic, an adjective meaning "pertaining to tin; derived from containing tin; specifically, designating those compounds in which the element has a higher valence as contrasted with stannous compounds."
Stannic has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings sta & ic which should not be misspelled with single 'N'
Wrong Spelling:  sta-n-ic  Correct Spelling:  sta-nn-ic 
Find more wrongly spelled words of Stannic to spell it well.